Answer:
The solutions should be added in this order NaCl > Na2SO4 > Na2S
Explanation:
Silver is insoluble as a chloride, so the silver ions get precipitated on addition of chloride ion as silver chloride. This means Ag+ would be removed the first.
So we will add NaCl in the first step.
The following reaction will occur.
Ag+ + Cl- → AgCl(s)
Both, Pb2 and Ni are soluble as chlorides. (lead chloride is soluble as a hot solution but will ppt when colder).
When we add Na2SO4, Pb2+ will get precipitated (because it's insoluble) as PbSO4 and Ni will remain soluble as NiSO4 is soluble in water.
The reaction that will occur is:
Pb^2+ + SO4^2- → PbSO4(s)
Nickel is insoluble as a sulfide. So when we will add Na2S, nickel will be precipitated as sulfide and be able to separate and be collected.
The solutions should be added in this order NaCl > Na2SO4 > Na2S
Answer:
WHAT IS THE DEFINITION FOR ISOTOPES
<u><em>the same atomic number (number of protons), but different mass number of neutrons and protons.</em></u>
WHAT ARE EXAMPLES OF ISOTOPES
<em><u>carbon</u></em>
<em><u>nitrogen</u></em>
<em><u>hydrogen</u></em>
WHAT ARE NON EXAMPLES OF ISOTOPES
<u><em>tiger-striped cat</em></u>
<u><em>idk other ones sorry...</em></u>
Answer:
the sun would reflect off of the windows causing less heat to travel into the building
Explanation:
Explanation:
The atomic mass of elements on the periodic table are derived from the proportion of the geonormal abundance of the different isotopes of an element.
- Using a mass spectrometer, the proportion/percentage/fraction by which each of the isotopes of an element occurs in nature is determined.
- This proportion is the geonormal abundance.
- From this the atomic mass of the element can be derived.
- Simply multiply the mass by the abundance and sum the values for the same isotopes together.
In my opinion, it is Ar (Argon)
Because as we move from left to right in a period, the value of ionization energy increases and Argon occupies the left most side in the respective period of the Periodic Table
